DH

Derk van der Houwen

DT De Staat Der Nederlanden, Te Dezen Vertegenwoordigd Door De Directeur-Generaal Der Posterijen, Telegraphie En Telefonie: 1 patents #2 of 6Top 35%
Overall (All Time): #4,112,821 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4205345 Method and device for eliminating the background brightness variation of a video signal Robert Wilcke 1980-05-27